INSTALLING THE SMD17E2
SMD17E2 User Manual
ADVANCED MICRO CONTROLS INC.
86
1.2 Operating Temperature Guidelines
Due to the onboard electronics, the maximum operating temperature of the SMD17E2 is limited to 203°F/
95°C. The motor by itself has a maximum operating temperature of 266°F/130°C. Depending on the operat
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ing current setting, move profiles, idle time, and the idle current reduction setting, it is possible to exceed
these temperatures in a thermally isolated environment. As explained in the mounting section, mounting the
SMD17E2 to a large metal heatsink is the best way to limit the operating temperature of the device. Operating
temperature should be monitored during system startup to verify that the maximum motor temperature
remains below its 203°F/95°C specification. SMD17E2 devices have an onboard thermistor and will remove
motor current if the operating temperature exceeds this limit. Ovetemperature faults are also reported in the
Network Input Data.
1.3 Mounting
All AMCI motors have flanges on the front of the motor for mounting. This flange also acts as a heatsink, so
motors should be mounted on a large, unpainted metal surface. Mounting a motor in this fashion will allow a
significant amount of heat to be dissipated away from the motor, which will increase the unit’s life by reduc
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ing its operating temperature. If you cannot mount the motor on a large metal surface, you may need to install
a fan to force cooling air over the unit.
Motors should be mounted using the heaviest hardware possible. AMCI motors can produce high torques and
accelerations that may weaken and shear inadequate mounting hardware.
1) The motor case must be grounded for proper operation. This is usually accomplished
through its mounting hardware. If you suspect a problem with your installation, such as
mounting the motor to a painted surface, then run a bonding wire from the motor to a solid
earth ground point near it. Use a minimum #14 gauge stranded wire or 1/4” wire braid as
the grounding wire
2) Do not disassemble any stepper motor. A significant reduction in motor performance will
result.
1.3.1 SMD17E2-M12 Mounting
The SMD17E2-M12 units are not water tight. Their IP50 rating makes them acceptable for use in dusty envi-
ronments with occasional condensation. These units should be mounted in such a way that condensation will
naturally drain off of the unit instead of pooling at the motor shaft, where the motor wires exit the motor, or
on the motor laminations.
1.3.2 SMD17E2-M12S Mounting
The SMD17E2-M12S units are not water tight. Their IP64 rating makes them acceptable for use in dusty
environments, environments with condensation, and environments where the unit may be exposed to splash
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ing water. SMD17E2-M12S units should be mounted in such a way that condensation and liquids will natu-
rally drain off of the unit instead of pooling on the motor laminations.
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